The Imperial Palace of Goslar at the foot of the Rammelsberg hill in the town of Goslar in the state of Lower Saxony. The compound consists of several buildings like the Kaiserhaus, the old collegiate church of St. Simon and Jude, the palace chapel of St. Ulrich and the Church of Our Lady. The Kaiserhaus is the oldest and greatest secular building in Germany dating back to the 11th century. The site is a UNESCO world heritage site